SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
fizyka-zsel.pl
SSL/TLS Certificate
SSL/TLS Certificate for fizyka-zsel.pl
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- *.fizyka-zsel.pl
- Valid from
- Apr 7, 2026
- Valid until
- Jul 6, 2026 (expired 21 days ago)
- Public key
- EC 384-bit
- Serial
- 067642DFF86C1D585D62CA40132BEDFFD566
- SHA-256 fingerprint
- DE:86:D0:82:BB:40:F7:BF:B5:F0:CD:D1:37:31:CF:CD:64:31:38:4F:38:84:07:BA:54:1B:AD:E4:78:DD:C8:B4
- Chain
- E8 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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DNS changes
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TLS certificate
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